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31 participants
37386 discussions

How to hide Via and Record-Route header to external network and restore them to internal network?
by Anthony Blandin 02 Sep '22

02 Sep '22

Hi Community, I have set up a SBC with Kamailio. I am testing voice call from external network to my network and voice call from my network to external network. When I send SIP messages to external network, I want to hide Via and Record-Route headers but when I receive replies from the external network I want to restore these Via and Record-Route headers to my network. How to store and restore these headers in Kamailio configuration ? Could you help on this? Thanks Anthony Blandin

4 11

remove user param from RURI
by Maarten Ureel 02 Sep '22

02 Sep '22

Hello I have a SIP INVITE with a RURI like this: sip:31427;phone-context=stripped@IP How can I remove the phone-context parameter here? In reality it's a very long string and the next hop (an SBC) is complaining about it, but I don't need it anyway. Regards Maarten

1 0

Dispatcher module and xavp_dst
by Pyry Aaltonen 01 Sep '22

01 Sep '22

Hello, I’m quite new user with kamailio (heard first time about it a year ago and joined the list yesterday) and now wondering how the xavp_dst should work. I had read from the documentation that ”The first XAVP is the current selected destination.” I use ds_select_dst with alg 13. And my kamailio version is kamailio 5.5.3 (x86_64/linux) So when my dispatcher list is like (I have also tried to differ the priority value like 10 and 1, but doesn’t make difference) 10 sip:1.2.3.4;transport=tcp 10 1 type=type1 10 sip:4.3.2.1;transport=tcp 10 1 type=type2 If one of the destinations fails (dx/ip), and it happens to be the one with higher priority or the one that just gets higher position in the dispatcher list if the prio Is equal. My xavp_$xavp(dsdst=>attrs) get null value. And, if I try to seek $(xavp(dsdst[0]=>attrs) or $(xavp(dsdst[1]=>attrs) I also got nothing. If both destinations are up with equal priority, it selects them with round-robin, and the xavp_$xavp(dsdst=>attrs) has the type value of the selected destination as expected, also the $(xavp(dsdst[0]=>attrs) or $(xavp(dsdst[1]=>attrs) contains the destinations so that the selected is 0 and the other is at position 1. The $du is updated as I expect so if one fails the other one is selected always, why the xavp_dst isn’t working same way, or am I missing something? If needed I’ll try to provide more information, Thanks already in advance -Pyry

2 4

HTTP client and HTTP/2 support
by Alex Balashov 01 Sep '22

01 Sep '22

Hi, I wasn’t able to find an answer on the list previously, nor any trail of breadcrumbs in the docs: do any of the existing HTTP client modules support HTTP/2? — Alex -- Alex Balashov | Principal | Evariste Systems LLC Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/

3 3

Disabling video rtp proxing
by mayamatakeshi 31 Aug '22

31 Aug '22

Hi, I'm using rtpengine for RTP proxying with kamailio. I use it just for audio. But eventually some terminal reinvites offering video. I don't want to refuse the request but just disable RTP proxying for video as my employer has limited bandwidth and want to reserve it only for audio. So I checked the rtpengine module documentation but it seems there is no way to restrict RTP proxying to be performed only for m=audio. I tried some things like replace_body("^m=video [0-9]+", "m=video 0"); and subst_body('/^m=video [0-9]+ /m=video 0 /'); and msg_apply_changes(); but still the RTP proxying for video is set up. Any hints on how to solve this?

3 4

Intermittent delays relaying BYE (up to 1s)
by Lewis Hutchinson 31 Aug '22

31 Aug '22

Ok so making progress but still a little confused, hopefully this forum can shed some light on this behaviour. Using the hints provided (thanks all so far) and the latency logging from the cookbook I have managed to isolate the issue down to RTPengine introducing the delay. INFO: app_python3 [apy_kemi.c:1820]: sr_apy_kemi_exec_func(): alert - action KSR.rtpengine.rtpengine_manage(...) took too long [1003089 ms] (file:(null) func:(null) line:252) What is confusing is, I don't believe this block should be being called. when the BYE is triggered, it routes to ksr_route_withindlg # handle requests within SIP dialogs if self.ksr_route_withindlg(msg)==-255 : return 1 from within the ksr_route_withindlg a check is done to see if any RTPengine work needs doing # Handle requests within SIP dialogs def ksr_route_withindlg(self, msg): if KSR.siputils.has_totag()<0 : return 1 # RTPEngine handling for UPDATES & reINVITES with sdp if self.ksr_route_rtpengine(msg) == -255: return 1 RTPengine is configured in a way to step in whenever there is an SDP present based on Content-Type: application/sdp # RTPengine handle anything with SDP def ksr_route_rtpengine(self, msg): if KSR.textops.has_body_type("application/sdp"): KSR.rtpengine.rtpengine_manage( "RTP/AVP replace-session-connection replace-origin ICE=remove") return 1 What I can understand is why is this being called and erroring introducing the delay when there is no Content-Type: application/sdp in a BYE ??? As a quick fix I have put this in which stops the problem (I am sure there is better ways to handle this but for now this works in a DEV environment) def ksr_route_rtpengine(self, msg): if KSR.is_BYE(): return 1 if KSR.textops.has_body_type("application/sdp"): KSR.rtpengine.rtpengine_manage( "RTP/AVP replace-session-connection replace-origin ICE=remove") return 1 Can anyone see why this would occur? Why is sr_apy_kemi_exec_func(): alert - action KSR.rtpengine.rtpengine_manage(...) even being called for this BYE ? when there is no Content-Type: application/sdp Lewis

2 3

Manual Siremis
by -Luís Fernando- 31 Aug '22

31 Aug '22

Hello, Is there a Siremis Manual, that explain how to configure a SIP Trunk, a sip route, etc.. Thank you

2 1

Websockets Configuration
by Mahmood Alkhalil 31 Aug '22

31 Aug '22

Hi, I'm trying to configure kamailio to register users over websockets, but i am not able to find any working configuration around, am new to kamailio. as far as i understand now, xhttp will handle the HTTP GET requests, i am not sure how to configure xhttp port number, cannot find parameters in the module manual, i found multiple sample configs but none of them is working, am using JsSip client. if someone can guide me with a link to a working config and that i can start from.

2 4

app_python module load error in 5.6
by Stefan-Cristian Mititelu 30 Aug '22

30 Aug '22

Hello, I am trying to load app_python.so module in kamailio 5.6 and I am getting the following error, under debian bullseye: ERROR: <core> [core/sr_module.c:573]: load_module(): could not open module </usr/lib/x86_64-linux-gnu/kamailio/modules/app_python.so>: /usr/lib/x86_64-linux-gnu/kamailio/modules/app_python.so: undefined symbol: LOG_ The app_python.so file exists, under that path. Same ERROR for app_python3.so. I have tried updating some modules's Makefile LDFLAGS but didn't work so far; still searching. Any ideas? Thank you, Stefan

2 3

Core variable with from userinfo value of sip uri
by Denys Pozniak 30 Aug '22

30 Aug '22

Hello! It was accidentally noticed that the variable $fU gets the user part of userinfo SIP URI (although it is logical and described in the document RFC2543). I got message below and my spam filter based on $fU passed it inside the network, as $fU was test From: <sip:test:test@1.1.1.1>;tag=123456 Sure I can filter it through a regular expression, but maybe it's worth adding another core variable with the userinfo value? SIP-URL = "sip:" [ userinfo "@" ] hostport url-parameters [ headers ] userinfo = user [ ":" password ] -- BR, Denys Pozniak

2 1

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